Dynamics of the Late Paleozoic Apart-Pull Basin and Its Relationship with Mineralization of Gold-Silver-Polymetallic-Barite-Siderite Deposits in Zha-Shan-Shang, Shaanxi Province
详细信息
- 责任者：Fang Weixuan (State Key Laboratory of Geological Processes and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Liu Jiajun
- 刊名：Acta Sedimentologica Sinica
- 出版年：2013
- 卷期：31(2)
- 关键词：断陷盆地 ; fault-downwarping basins ; 成矿作用 ; metallogenesis ; 陕西 ; Shaanxi Province
- 页码：p.193-209
- 图表：illus., 52 refs.
- 分类号：0300
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
Based on re-construction and restoration of geotectonic-paleogeographic position and tectonic lithofacies,the Paleozoic sedimentary basin of Zhashui-Shanyang-Shangxian in Shaanxi Province could be the apart-pull basin on the north passive margin of the Qinling sub-plate block. Obvious regional mineralization zonation in this basin may be possibly related to poly diagenesis-mineralization.Firstly,a variety of hydrothermal sedimentary lithofacies are well established in the basin which disclosed that hydrothermal diagenesis-mineralization at the large scale took place in the basin.Secondly,lithofacies zones of ankerite-albite breccia in the remain-sea basin closely related to vein-type of Au-Ni-Co-Cu deposits at the higher grades were formed by cryptoexplosion of deep-sourced,alkaline hydrothermal fluids. Finally,Carlin-like gold deposits are hosted in the upper part of basin-base structure layer and lithofacies of hydrothermal turbidity at the basin were controlled by the late brittle-ductile shear zone in the area.
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